To have more consistency between the colours I add a colour layer in the soft light mode
The red bandanna alone is a bit distracting so I have to find a background picture with some red color to do a recall.
I did a montage with 3 different pictures; I blurred them, added some noise and played with the colors to get what I wanted.
Now that I have the right colours and the background I can use the RED render for the backlight. This one I have used twice. One in normal mode and a blurred copy in screen mode.